[BugFix] HiFiBerry DAC+ HW Volume (RuneAudio 0.3-beta)

Orion

This fix is for all HiFiBerry DAC+ owners.
I've forgotten to include the right informations in our Audio Cards database (I'm very sorry for this mistake...).
Here is the solution:

1. Login via ssh into your RuneAudio player.

2. Execute this command to update the acards_details Redis hash table.

redis-cli hset acards_details snd_rpi_hifiberry_dacplus "{\"sysname\":\"snd_rpi_hifiberry_dacplus\",\"extlabel\":\"HiFiBerry DAC+ (I&#178;S)\",\"mixer_numid\":\"1\",\"mixer_control\":\"Playback Digital\",\"hwplatformid\":\"01\",\"type\":\"i2s\"}"

3. Execute this command to force a refresh of the MPD audio output configuration.

refresh_ao

4. Go to http://runeaudio.local/mpd , select the HiFiBerry DAC+ audio output and configure the volume control as "hardware"

Enjoy your HiFiBerry DAC+ with hardware volume correctly enabled.

Simone.

matt

didn't work for me. Volume still goes straight back to 100.

Orion

matt wrotedidn't work for me. Volume still goes straight back to 100.

Excuse me, I've made a typo in the redis-cli command.

Try to re-execute the command.

matt

Now i get "command not found".
The redis-cli part seemed to work the first time but after trying the second command I got messages like "pipe not found". sorry I should have taken more notice of these error messages.

Valek

Thanks a lot for such a quick fix, it works perfect (at least i see i can change the volume in web interface; trying this now with amp off as it is late already =), will retry tomorrow but think everything is ok).

matt wroteNow i get "command not found"

When copying the command, exclude the "[root@runeaudio ~]#" part. I made this mistake as well at first. Hope that helps!

Orion

When copying the command, exclude the "[root@runeaudio ~]#" part. I made this mistake as well at first. Hope that helps!

I've updated the post.

Valek

So I can reconfirm hardware volume works now. Just have a short question - the volume disk is usable only between 60 and 100, as when it reaches 60 the sound is almost off already. Between 60 and 100 it is therefore not so smooth as even a small change of volume disk changes the volume significantly. Is this an intended behavior?

Thanks once again for such a great work!

andy.room

Is there a similar fix for HiFiBerry Digi as well? Thanks in advance

ACX

Hi andy.room,
HiFiBerry Digi/Digi+ don't have hardware volume control.

matt

Thanks for this, I got it to work this time.
I also find that the volume control is really only usable between 60 and 100, can we fix this or is it a hardware issue?

ACX

Valek wroteSo I can reconfirm hardware volume works now. Just have a short question - the volume disk is usable only between 60 and 100, as when it reaches 60 the sound is almost off already. Between 60 and 100 it is therefore not so smooth as even a small change of volume disk changes the volume significantly. Is this an intended behavior?

Take a look at this thread:
#254
We are planning to implement a more natural custom volume control in a future version.

rhodo

I've been away this weekend but tested your solution this morning and it works excellent (although the refresh_ao command produces a lot of errors). Hardware volume control works fine now, Thanks.

Fin

ACX wrote We are planning to implement a more natural custom volume control in a future version.

Please do!

If possible, perhaps include customisation, so that the user can set the maximum level to match their amplifier choice.

aj78

Customisation of the max level (or perhaps different curves for different popular DACs) would be a great blessing: I have the IQaudio DAC, and 96% volume corresponds to 0dB. So if you put the volume to 100% and play a track that has been normalised, it clips.... It would be nice if, when you do the volume curve mapping for this DAC, setting 100% on the RuneUI actually sent 96% to the hardware.

Stwert

Yes, I would also vote for a remapping of the range to better fit with what the actual values from alsamixer are doing. (Using IQAudIO DAC+)
I realize this is a bit off thread topic, but there seems to be a discussion here already so I thought I would throw in my vote too.

shakey102001

Second that thought (IQaudio Pi-dac)

ICLlP

ACX wroteHi andy.room,
HiFiBerry Digi/Digi+ don't have hardware volume control.

What is Hardware Volume Control?

Triodefreak

No joy so far.

Step 1. I login in with user: root and password:

After executing your step 2: I see : " (integer) 0"

After executing step 3: I see: " Locked!"

And I can't go to step 4 since I have to use the ip address.

But when I go to ip addres http://192.168.178.27/mpd/ I cannot choose the hifiberry dac+

Kind regards,
Bas

Attachments

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gswg

A little off topic but alsa has calls that allow the application to get the range / max and min values from the sound card's driver.

In the IQaudIO Pi-DAC(s) I've set 100% to +4db, and 0% to -103.5db (mute on the TI PCM5122 DAC) I did this as the PCM5122 will actually allow you to go up to +23db or thereabouts and if you want clipping then that was what you achieved

Anyway, just FYI

Gordon

taizen

Hi ACX,
with control volume in place with Hifiberry dac+ the sound of HiRes (24b 192kHz) has clicks and pause.
When I flash the SD Card, without volume control,It is very good !
Regards